Quick answers
- Which hospitals does Larry Mathias Iii work at?
- Medicare's official clinician data lists Larry Mathias Iii at 5 hospitals: Ascension St John Broken Arrow, Ascension St John Jane Phillips, Ascension St John Medical Center, Ascension St John Sapulpa and St John Owasso. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Larry Mathias Iii see patients?
- Medicare's clinician data lists 2 practice locations, including Owasso, OK and Marianna, FL. Call before your visit to confirm the address.
- What is Larry Mathias Iii's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Larry Mathias Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Larry Mathias Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Larry Mathias Iii?
- (888) 264-0330, as listed in official Medicare / NPI Registry data.
- What is Larry Mathias Iii's NPI number?
- 1730534520. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Larry Mathias Iii works
Medicare's Facility Affiliation Data lists Larry Mathias Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension St John Broken ArrowBroken Arrow, OK · Acute Care Hospital · CCN 370235
- Ascension St John Jane PhillipsBartlesville, OK · Acute Care Hospital · CCN 370018
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · CCN 370114
- Ascension St John SapulpaSapulpa, OK · Critical Access Hospital · CCN 371312
- St John OwassoOwasso, OK · Acute Care Hospital · CCN 370227
Practice locations
Addresses where Larry Mathias Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 19469 E 75th St NOwasso, OK 74055 (888) 264‑0330
- 4250 Hospital DrMarianna, FL 32446 (850) 526‑2200
Group practices
Medicare enrollment lists Larry Mathias Iii as a member of these groups (CMS data updated 2026-10-02).
- Sanford Clinic268 clinicians in the group
- Concord Radiology PLLC225 clinicians in the group
- ER Physician Group at Jackson Hospital154 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Oklahoma
Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730534520 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians